The correct answer is Each sentence begins with the subject.
Explanation:
In this paragraph, all the sentences start with the word "Cory" who is the subject in the sentence as he is the one that performed actions such as try, attend, or made. This writing feature makes the text quite monotonous because all the sentences have the same structure (subject-predicate), and therefore there is no sentence variety. Moreover, this can be corrected if other types of sentences are used; for example, the author can begin a sentence with the object of the action, the verb, or a transition. According to this, the paragraph lacks sentence variety because each sentence begins with the subject.